Americans spend $61 billion on their pets each year. It would take $20 billion to end homelessness. If dogs are as smart as we think they are, they'd go without a jewel-studded collar or cable subscription to DOGTV if it meant giving humans a place to sleep at night.

Dogs play in the inground pool at Fuzzy Buddies, 'a recreational resort for pets' in Tampa, Fla., July 11. Op-ed contributor Jim Sollisch writes: 'As a sign of our evolutionary achievement, scientists point to how much leisure time we humans have. Dogs have obviously advanced far beyond us. They’re born into a life of retirement while we spend most of our life working toward that goal.'